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Grade: 12
        
2.56grams of sulphur  in 100ml solution  shows osmotic  pressure  of 2.463atm at 300k.how many sulphur  atoms are associated in colloidalsol? 
10 months ago

Answers : (1)

Vikas TU
8726 Points
							
We need to calculate first the observed molar mass.
O.P = W*R*T/(M*V)
M = WRT/((O.P)*V)
Put the values,
M = (2.56)*0.0821*300/(2.463)*(0.1)
    = 256 grams/mol.
 
Number of atomes = > 256/32 => 8.
10 months ago
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